- remove builddisabled conditions for rings - will be done now as
  BuildFlags: excludebuilds

- gnulib-simple-backup-fix.patch: Add patch to make simple backups in correct
  directory; broken in 9.1.  See https://bugs.gnu.org/55029

- update to 9.1:
  * chmod -R no longer exits with error status when encountering symlinks.
    All files would be processed correctly, but the exit status was incorrect.
  * If 'cp -Z A B' checks B's status and some other process then removes B,
    cp no longer creates B with a too-generous SELinux security context
    before adjusting it to the correct value.
  * 'cp --preserve=ownership A B' no longer ignores the umask when creating B.
    Also, 'cp --preserve-xattr A B' is less likely to temporarily chmod u+w B.
  * 'id xyz' now uses the name 'xyz' to determine groups, instead of xyz's uid.
  * 'ls -v' and 'sort -V' no longer mishandle corner cases like "a..a" vs "a.+"
    or lines containing NULs.  Their behavior now matches the documentation
    for file names like ".m4" that consist entirely of an extension,
    and the documentation has been clarified for unusual cases.
  * 'mv -T --backup=numbered A B/' no longer miscalculates the backup number
    for B when A is a directory, possibly inflooping.
  * cat now uses the copy_file_range syscall if available, when doing
    simple copies between regular files.  This may be more efficient, by avoiding
    user space copies, and possibly employing copy offloading or reflinking.
  * chown and chroot now warn about usages like "chown root.root f",
    which have the nonstandard and long-obsolete "." separator that
    causes problems on platforms where user names contain ".".
    Applications should use ":" instead of ".".
  * cksum no longer allows abbreviated algorithm names,
    so that forward compatibility and robustness is improved.

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